  public class 3(5) {
    public static void main (String args[]) {
      int [] a= {10,20,30,40},b[]={{1,2},{4,5,6,7}};
      b[0] = a;
      b[0][1] = b[1][3];
      System.out.println(b[0][3]);
      System.out.println(a[1]);
      }
  }